Hello there, I have been playing around with WinBottler and have managed to get 3 bits of Windows software running on OSX... Am very pleased! I am now trying to get a piece of Education software called Testbase running. I install it using an empty prefix, but once it is all set up it will not run as it is looking for a data file. This is in a subfolder called /data When installed in windows, a shortcut is made with extra parameters such as c:/program files/tesbase/testbase32.exe /eng_k2 The bottled version does not have the /eng_k2 bit and I was wondering if there is a way to edit the prefix to add this in and see if it works... thanks for any help in advance... G